Home / 722,012.96-996,374.30-390,867.95

Finding the Fourth Proportional to 722,012.96, 996,374.30 and 390,867.95

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Solution

The fourth proportional to 722,012.96, 996,374.30 and 390,867.95 is: 539,395.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,012.96 : 996,374.30 = 390,867.95 : x
  2. Step 2: Convert to fraction form
    722,012.96/996,374.30 = 390,867.95/x
  3. Step 3: Cross multiply
    722,012.96x = 996,374.30 × 390,867.95
  4. Step 4: Simplify right side
    722,012.96x = 389,450,773,137.47
  5. Step 5: Solve for x
    x = 389,450,773,137.47/722,012.96
  6. Step 6: Final answer
    x = 539,395.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.